Gael hollweg



(No Model.)

0. HOLLWEG.

POCKET KNIFE.

No. 364,414. Patented June '7, 1 887 II/ZZIZe55e5;

Aiiw'lzeys UNITED STATES PATENT OFFICE.

CARL HOLIAVEG, OF BARMEN, PRUSSIA, GERMANY.

POCKET-KNIFE.

SPECIFICA'IIQN forming part of Letters Patent No. 364,414, dated June 7,1887.

Application filed January 10, 1387. Serial No. 224,886.

To all 1072 0772 it may concern:

Be it known that I, CARL HoLLWEe,of Barmen, Ithcnish Prussia, Germany,have invented a new and Improved Knife, of which the following is afull, clear, and exact description.

The object of my invention is to provide a new and improved knife withmovable blades in which all springs are dispensed with, and in whicheach blade is held in a locked position when opened or closed, and theblade is similar view of the same with the blades closed.

Fig. 3 is a sectional plan view of the same on the line or x of Fig. 2.Fig. 4 is a side elevation of the same with parts removed. Fig. 5 is anelevation of the back locking-plate. Fig. 6 is a perspective view of oneof the knife blades; and Figs. 7 to 13 are detail views of parts of theknife, hereinafter more fully described.

The knife casing or handle consists of two side pieces or plates, A, oneach of which can be secured an ordinary handle, B. The two side piecesare fastened together by rivets It, on which turn the knifeblades, andby a back plate, 0, (see Fig. 5,) provided with the lugs h, which fit incorresponding recesses, 1;, formed in the said side plates, A.

Each of the knife-blades K is provided with the usual aperture, a,through which passes the rivet It, and with a second square aperture,1), which corresponds with the square aperture b formed in theturning-plate E, (see Fig. 7,) adapted to turn on the said rivet R. Inthe apertures b and b fit the trunnions of the carrying-pin F, (seeFigs. 11 and 3,) adapted to slide in the semicircular recess f, formedin the side plates, A. V l

It will be seen that when the plate E is turned the knife-blade K isalso turned with (No model.)

on the plate A, by the washer G, which fits over the central part of theplate E and over the trunnions i i of the handle D. The rivet R holdsthe washer Gin place. (See Fig. 3.)

The handle D is provided in its rim with two recesses, r r, placedopposite each other, and into which fits a corresponding lug, n, formedon the locking-plate H, secured to the side plate, A, as shown in Figs.1, 2, and 4.

If two knife blades K are fulcrumed on one rivet R, as shown in Fig. 3and the lower parts of Figs. 1 and 2, then I place a partitionplat e, L,(shown in Fig. 13,) between the said knifeblades K, as shown in Fig. 3;but if only one knifeblade K is fulcrumed 011 the rivet It, as shown inthe upper part of Figs. 1 and 2, then I usea partition-plate, L, (seeFig. 13,) on each side of the knifeblade K. This partition-plate L isprovided with the semicin cnlar slot f, corresponding to the slot f inthe side plate, A. In the latter case I need but one handle D on oneside of the knife, and the other side of the knife is provided with asemicircular plate, J, without a handle, as shown in Fig. 12.

The operation is as follows: When the knife is in a closed position, asshown in Fig. 2, and the operator desires to open one of theknifeblades, he moves the respective handle D into i a right-angularposition to the plate E, and by inserting his finger-nail under theinclined edge (I of the handle D presses the latter upward. This upwardmovement throws the notch r outof contact with the lug n on thelocking-plate H, and the operator then turns the handle D, whereby theplate E turns with the handle D and the respective knifc-blade K turnswith the plate E on account of its connection with the latter by thecarrier-pin F. As soon as the respective knife-blade K is fully opened,as shown in Fig. 1, then the operator presses the handle D flat upon theplate A,

whereby the other notch ,r, engages the lug non the locking-plate H, andthe knife-blade K is thus held locked in the open position, as thehandle D and the plate E are prevented from turning.

It will be seen that the knife-blades can all be independently opened orclosed and held locked in either position without compelling theoperator to touch the knife-blades. It will also be seen that no springsof any description are used in the construction of my knife.

The improvement can be used on pocketknives or larger knives, and it canalso be adapted to corkscrew-blades, &c.

Having thus fully described my invention, I claim as new and desiretosecure by Letters Patent-- 1 l. The combination, with the handle, theside plates of which are immovable with respect to each other, of ablade pivoted within the handle and provided with an outer independenthandle for throwing it into or out of the knife-handle, substantially asset forth.

2. The combination, with the handle, the

. side plates of which are immovable with respect to each other, and alocking-lug on the outer side of the handle, of a blade pivoted withinthe handle and provided with an outer independent handle adapted toengage the said locking-lug, and thereby lock the blade when thrown,substantially as set forth.

3. In a knife, the combination,with aknifeblade, of a carrier-pinconnected with the said blade, a turning-plate connected with the saidcarrier-pin, and a handle'pivoted on the said turning-plate,substantially as shown and de scribed.

4. In a knife, the combination, with aknifeblade, of a carrier-pinconnected with the said knife-blade, aturn'ing-plate connected with thesaid carrier-pin, a handle pivotedon the said turning-plate, and alocking-plate for locking the said handle in position, substantially asshown and described.

5. In aknife,the combination, with a knifecasing and the rivet on whichturns theknifeblade, of a knife-blade having'a square aperture at oneside of its fulcrum, a carrier pin fitting into the square aperture ofthe knifeblade, a plate turning on the said rivet and connected with"the said carrier-pin, and a handle hinged on the said turning-plate,substantially as shown and described.

6. In a knife, the combination,with a knifecasing and the rivet on whichturns the knifeblade, of a knife-blade having a square aperture on oneside of its fulcrum, a carrier -pin fitting into the said squareaperture of the knife-blade, a plate turning on the said rivet andconnected with the said carrier-pin, a handle hinged on the saidturning-plate, and a locking-plate secured to the said knife-easing andserving to hold the said handle in a locked position, substantially asshown and described.

7. In a knife, the combination, with the knife-casing and the rivet onwhich turns the knife-blade, of a knife-blade having a square apertu reon one side of its fulcrum, a carrier-' pin fitting into the said squareaperture of the knifeblade, a plate turning on the said rivet andconnected with the said carrier-pin, ahandle hinged on the saidturning-plate, and a locking-plate secured to the said knife-casing andserving to hold the said handle in a locked position, and a washer forholding the said handle on the said turning-plate, substantially asshown and described.

8. In a knife, the side plates, A, having the semicircular slot f, therivet R, and the back, in combination with the knife-blade K, turning onthe said rivet R, and having a square aperture, 1), the carrier-pin F,sliding in the said semicircular recess f of the said plate A, one endof which pin Ffitsinto the said square aperture 1) of the knife-blade,and an outer handle for moving the said carrier-pin in the saidsemicircular slot f, substantially as set forth.

9. In a knife, the side plates, A, having the semicircular slot f andthe recesses 12, the rivet R, and the back plates, 0, having thelugs h,fitting into the said recesses 29 of the side plates, A, in combinationwith theknife-blade K, turning on the said rivet It, and having a squareaperture, 1), the carrierpin F, sliding in the said semicircular recessf of the side plate, A, one end ofwhich pin Ffitsinto the said squareaperture 1) of the knife-blade, the turning-plate E, fulcrumed onthesaid rivet R, and provided with the square aperture Z), into whichfits the other end of the carrier'pin F,

the handle D, hinged on the said turning-plate E, the locking-plate H,provided with the lug n, on which fit the notches r in the said handleD, and the washer G, holding the lugs i on the handle D in the recessesm'of the turning-plate E, substantially as shown and de: scribed.

10. In a knife, a knife-casing provided with the side plates, A, havingthe semicircular recesses f, the back plate, the rivet or bladepivot,and the knife-blade K, turning in the said casing on the said rivet orpivot, and provided with a square aperture, b, in combination with thecarrier-pin F, sliding in the said semicircular recess f of the sideplate, one end of which pinF fitsinto the said square aperture 1) of theknife-blade, the turningplate E, provided with the square aperture 1),into which fits the other end of the said earrier-pin, F, the handle D,hinged on the said turningplate E, and the locking-plate H, having thelug a, on which fits one of the notches r of the said handle D,substantially as shown and described.

CARL HOLLWEG.

\Vitnesses: Y

FRIEDR. HOLLWEG, 81:, AUG. Flissnnnnnn.

